spring集成mina简明教程

mina服务端代码如下：

try {            IoAcceptor accept = new NioSocketAcceptor();            DefaultIoFilterChainBuilder chain = accept.getFilterChain();            accept.getSessionConfig().setReadBufferSize(2048);            accept.getSessionConfig().setIdleTime(IdleStatus.BOTH_IDLE,10);            accept.setHandler(new ServerHandler());            LoggingFilter loggingFilter = new LoggingFilter();            chain.addLast("logging", loggingFilter);            chain.addLast("codec", new ProtocolCodecFilter(new TextLineCodecFactory(                    Charset.forName("UTF-8"),LineDelimiter.WINDOWS.getValue(),                    LineDelimiter.WINDOWS.getValue())));            accept.bind(new InetSocketAddress(9123));            logger.info("server成功启动");        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } 

ServerHandler的代码如下：

public class ServerHandler extends IoHandlerAdapter{    private static final Logger log = Logger.getLogger(ServerHandler.class);    @Override    public void sessionCreated(IoSession session) throws Exception {        InetSocketAddress adress = (InetSocketAddress) session.getRemoteAddress();        System.out.println("hostString:"+adress.getHostString());        System.out.println("hostName:"+adress.getHostName());        System.out.println("address:"+adress.getAddress());        System.out.println("port:"+adress.getPort());           }    @Override    public void messageReceived(IoSession session,Object message)throws Exception{        String str = message.toString();        log.info("The message received is ["+str+"]");                System.out.println("the message received is "+str);        if(str.endsWith("quit")){            session.close(true);            return;        }    }}  

在spring中集成mina无非是将创建对象和给对象设置属性的过程以配置文件的形式实现

配置文件如下：

<beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">    <bean id="serverHandler" class="com.snail.mina.server.ServerHandler"/>    <bean id="protocolCodecFilter" class="org.apache.mina.filter.codec.ProtocolCodecFilter">        <constructor-arg>            <bean class="org.apache.mina.filter.codec.textline.TextLineCodecFactory"/>                    </constructor-arg>    </bean>    <bean id="defaultIoFilterChainBuilder" class="org.apache.mina.core.filterchain.DefaultIoFilterChainBuilder">        <property name="filters">            <map>                <entry key="codecFilter" value-ref="protocolCodecFilter"/>            </map>        </property>    </bean>    <bean id="ioAcceptor" class="org.apache.mina.transport.socket.nio.NioSocketAcceptor"        init-method="bind" destroy-method="unbind">        <span style="color:#FF0000;"><property name="defaultLocalAddress" value=":9123"/>①//问题所在</span>        <property name="handler" ref="serverHandler"/>        <property name="filterChainBuilder" ref="defaultIoFilterChainBuilder"/>        </bean></beans>  

问题就出在①处，该处对应的java代码如下：

accept.bind(new InetSocketAddress(9123));

这句话的意思是给IoAccept绑定监听端口，我们知道spring中的value都是字符串，虽然value可以自动转化成int，double等类型，但是value不能转化成对象，那我们如何解决呢？

===================================================================

解决办法：

spring中的属性编辑器可以帮我们解决这个问题，当我们想用字符串来表示对象时我们就需要用到属性编辑器，对于本例中需要用到的参数InetSocketAddress来说，spring中自带了该类型的编辑器，配置如下（如需其他属性编辑器请自行搜索）：

    <bean class="org.springframework.beans.factory.config.CustomEditorConfigurer">        <property name="customEditors">            <map>                <entry key="java.net.SocketAddress">                    <bean class="org.apache.mina.integration.beans.InetSocketAddressEditor"/>                </entry>            </map>        </property>    </bean>  

需要注意的InetSocketAddressEditor是mina-integration-beans.jar包下的一个类，我们需要在pom.xml中加入这个依赖，代码如下

    <dependency>        <groupId>org.apache.mina</groupId>        <artifactId>mina-integration-beans</artifactId>        <version>2.0.7</version>    </dependency> 

加上这个依赖后项目会报错，报错信息如下：

Failed to execute goal on project mina-test: Could not resolve dependencies for project com.snail.mina:mina-test:jar:0.0.1-SNAPSHOT:<span style="color:#CC0000;">Failure to find org.apache.mina:mina-core:bundle:2.0.7</span> in http://10.5.1.13:8081/nexus/content/groups/public was cached in the local repository, resolution will not be reattempted until the update interval of nexus has elapsed or updates are forced -> [Help 1]

出现这个问题的原因是因为mina打包为bundle（这个过程我也不清楚，有兴趣的同学可以百度 maven bundle）

解决办法是在pom.xml中加入相应的插件，代码如下：

        <build>            <plugins>                <plugin>                    <groupId>org.apache.felix</groupId>                    <artifactId>maven-bundle-plugin</artifactId>                    <extensions>true</extensions>                </plugin>            </plugins>        </build>  

启动本地服务器，用Secure CRT连接本地服务器(也可以用DOS连接，或者自己写客户端也可以)

控制台输出如下：

如有写的不明白的地方可以在下面留言！！！
THE  END！！！